I have a 15 gal with cardnials and rams. when i shine a flashlight into the tank from the side the Rams blue color becomes very intense. I have a flourescent light. Has anyone ever light their tank with the small halogen spotlights that are used in home lighting. (the ones that come with a built in relfector?) my fish look great when they are at the rear of the tank, but look drab when they are in the front. any suggestions?